Question

Show transcribed image textCalculate the inductance of a steroidal coil as shown in Figure 5 - IS. the coil has inner radius a, outer radius b, and N turns in total. Tire magnetic core Iras a permeability mu. An engineering approximation can be applied as the mean radius of the core (denoted as rm) is generally much larger than the diameter of the core, so the magnetic field over a core cross - section can be viewed as constant.